671594040 has 96 divisors (see below), whose sum is σ = 2350595520. Its totient is φ = 165314304.

The previous prime is 671594039. The next prime is 671594047. The reversal of 671594040 is 40495176.

671594040 is a `hidden beast` number, since 67 + 1 + 594 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 671593986 and 671594004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671594047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67072 + ... + 76431.

It is an arithmetic number, because the mean of its divisors is an integer number (24485370).

Almost surely, 2^671594040 is an apocalyptic number.

671594040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671594040 is an abundant number, since it is smaller than the sum of its proper divisors (1679001480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671594040 is a wasteful number, since it uses less digits than its factorization.

671594040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143533 (or 143526 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 671594040 is about 25915.1314872219. The cubic root of 671594040 is about 875.7274125286.

The spelling of 671594040 in words is "six hundred seventy-one million, five hundred ninety-four thousand, forty".